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The Borgia Dagger (Hardy Boys Casefiles #13)

Franklin W. Dixon

Cover of The Borgia Dagger (Hardy Boys Casefiles #13)

The Borgia Dagger (Hardy Boys Casefiles #13)

Age Rating, Reading Level & Content Guide

by Franklin W. Dixon

Reading Level 4-5 9LE Ages 9-12 Balanced Read

The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.

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About This Book

Have you ever wondered if a cursed dagger could bring real danger? Heiress Tessa Carpenter fears that the legendary Borgia dagger in her family’s collection is more than just a myth—it might be trying to harm her. Can Frank and Joe Hardy uncover the truth before it’s too late?

Themes

Quick Assessment

This mystery novel follows young detectives Frank and Joe Hardy as they help heiress Tessa Carpenter investigate threats linked to a supposedly cursed family heirloom, the Borgia dagger. Suitable for ages 9-12, the story blends suspense and detective work without graphic content, making it a thrilling yet age-appropriate read for middle-grade mystery fans.

Why we rated The Borgia Dagger (Hardy Boys Casefiles #13) 9LE

The Borgia Dagger (Hardy Boys Casefiles #13) is written at a Level 4-5 reading level across 154 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, The Borgia Dagger (Hardy Boys Casefiles #13) works for readers up to grade 6.5.

We rate The Borgia Dagger (Hardy Boys Casefiles #13) as 9LE ("Light — Emotional") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.

No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.

Thematically, The Borgia Dagger (Hardy Boys Casefiles #13) explores mystery, adventure, friendship, and detective stories — these threads give the book room to mean different things to different readers.

Good fit for

  • Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
  • Kids drawn to stories about mystery, adventure, friendship.

Maybe not for

  • ! Readers looking for something heavier — this is a gentle, low-stakes story by design.

For Parents

Content Intensity

9LE — Light — Emotional
Emotional
Light
Physical
Light
Social
Clear
Thematic
Light

Light conflict or tension. Mild peril resolved quickly.

Data confidence: standard

Was our "Mild" content intensity rating accurate for this book?

Reading Insights

Hook Factor

3/10

A steady, thoughtful read that rewards patient readers.

Discussion Potential

1/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
4
Emotional Weight
4
Theme Richness
4
World Scope
1
Data Confidence
7

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Details

Book Length

154 pages
ISBN
9780671736767
Pages
154
Publisher
Pocket Books
Published
July 1, 1991
Type
Fiction

Genres

Subjects

Mysteries, Espionage, & Detective StoriesMystery and Detective StoriesMysteryHardy BoysAdventure and Adventurers